EP1544445A1 - Prozess und Einrichtung zur Regelung der Funktion des Verbrennungsmotors eines Kraftfahrzeugs - Google Patents

Prozess und Einrichtung zur Regelung der Funktion des Verbrennungsmotors eines Kraftfahrzeugs Download PDF

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Publication number
EP1544445A1
EP1544445A1 EP04300884A EP04300884A EP1544445A1 EP 1544445 A1 EP1544445 A1 EP 1544445A1 EP 04300884 A EP04300884 A EP 04300884A EP 04300884 A EP04300884 A EP 04300884A EP 1544445 A1 EP1544445 A1 EP 1544445A1
Authority
EP
European Patent Office
Prior art keywords
engine
load
motor
operating parameter
control method
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04300884A
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English (en)
French (fr)
Inventor
Jérôme Cruchet
Marc Daneau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Publication of EP1544445A1 publication Critical patent/EP1544445A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1448—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an exhaust gas pressure
    • F02D41/145—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an exhaust gas pressure with determination means using an estimation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1497—With detection of the mechanical response of the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/08—Exhaust gas treatment apparatus parameters
    • F02D2200/0812—Particle filter loading
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/18—Control of the engine output torque
    • F02D2250/26—Control of the engine output torque by applying a torque limit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines

Definitions

  • the invention relates to internal combustion engines of motor vehicles and, in particular, the protection procedures thermomechanical of such engines.
  • the invention relates to a method and a engine operation control system, allowing limit the engine load according to its point of operation.
  • Thermomechanical protection procedures consist, in a manner conventional, to limit engine performance according to the running speed of the engine.
  • This performance limitation may, for example, consist of in a limitation of the quantity of fuel injected or in a torque limitation.
  • Such protection strategies are essentially based on the principle that the main quantities motor thermomechanical characteristics, such as the maximum pressure in the cylinders, the temperature of the exhaust manifold, ..., which define the acceptable operating limits for the engine, are reproducible for identical operating points, that is to say points defined by a couple regime of operation / load.
  • thermomechanical magnitudes are below their critical value, which makes it possible to limit the load of the motor it a value less than a value from which the Engine reliability may be impaired.
  • engine exhaust internal combustion contain harmful chemical species that one treats routinely by providing exhaust systems with filtration capable of retaining the particles carried by the gases exhaust and transform the harmful chemical species contained in these gases in non-polluting substances.
  • thermomechanical quantities defining the limits acceptable for the engine, especially the temperature in the exhaust manifold, which are also independent of the point Operating,
  • thermomechanical There is therefore a risk that variations in these thermomechanical quantities cause engine operation beyond the maximum permissible load.
  • FIG. 1 shows a block diagram illustrating the general structure of a combustion engine, internal, its means supply and exhaust of the combustion gases, as well as than its means of piloting.
  • the general reference numeral 10 denotes very much the engine casing, which includes, in the example considered, four cylinders 11.
  • the air intake system cool in the engine 10 essentially comprises an air filter 12 supplying, via a compressor 14, and ducts 16 appropriate, the intake manifold 18 of the engine 10.
  • this one recover the exhaust gases from the combustion and evacuate these last to the outside, through the compressor 14 and a particulate filter 22,
  • a functional heat exchanger 24 equipping the pipe 16 power supply, is in heat exchange relationship with the exhaust, so recover some of the calories conveyed by them.
  • the motor 10 is further associated with a circuit 26 of exhaust gas recirculation, used to reinject a part of these gases in the intake manifold 18.
  • This recirculation circuit 26 is equipped with a valve of recirculated exhaust gas flow control, driven by a unit electronic control unit 30 duly programmed, so as to regulate the amount of recirculated gas around a set value, calculated by the central unit 30 to limit the amount of nitrogen oxide product while avoiding the formation of fumes in the gases exhaust.
  • the central unit 30 incorporates all the material and software for managing the operation of the engine, in particular the quantity of fuel injected, the moment of ignition of the engine, the recirculation valve 28, or the law of lift of the valves, in particular according to the torque requested by the driver by means of of the accelerator pedal P.
  • the computer 30 is provided with means enabling to limit the engine load to prevent the engine load from beyond a permissible limit from which the reliability of the latter may be altered.
  • the computer 30 includes, stored in memory, a map 32 in which are stored a set of values maximum permissible load, in the form of a maximum level, of injected fuel or torque delivered by the engine, depending on the operating point of the engine. From a load value maximum extracted from the mapping for the operating point of the engine, the computer controls the operation of the engine, known manner so as to avoid that the load exceeds this threshold value.
  • the central unit 30 extracts of the map 32 a maximum load value C Max .
  • An additional calculation module 33 which receives as input the value extracted from the map 32 and a set value CP corresponding to a driver load and develops a load value C from which the motor is driven. This load value C is calculated by calculating the minimum value between the setpoint value CP and the value extracted from the map.
  • this protection strategy allows, on the one hand, to limit the engine load according to its engine speed. operation, and, secondly, according to parameters of functioning that may affect thermomechanical stresses of the engine, regardless of its point of operation.
  • the presence of the particulate filter 22 in the exhaust line of the engine causes an increase in exhaust backpressure, which which causes an increase of the pressure upstream of the turbine of the turbo-compressor 14 and therefore a direct increase in the temperature upstream of this turbine, due to the fact that the ratio between the pressure level and the temperature level remains constant.
  • Such an increase also has the effect of increasing the rate of recirculated flue gases, a consequent increase in the wealth of the gaseous mixture and an increase in temperature, upstream of the turbine.
  • the burden is limited, on the one hand, by the engine, and, secondly, depending on the pressure before the turbine.
  • a first-order filter 34 is used to to overcome this speed of relative variation between the pressure and the temperature upstream of this turbine, and for which a duration of T filtering can be set.
  • thermomechanical protection strategy of the engine is based on a limitation according to the speed and pressure before turbine, which is filtered by means of a first order filter.
  • the maximum load level can be function of the engine operating speed and the wealth of the air-fuel mixture upstream of the turbine, or the air flow, or more pressure in the intake manifold.
  • the parameter used can also be the pressure level upstream particle filter fitted to the exhaust line of the engine or the differential pressure level between the upstream and downstream of the filter particle or a variable representative of a level of cons exhaust pressure generated by the state of loading of the filter at particles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Supercharger (AREA)
EP04300884A 2003-12-19 2004-12-14 Prozess und Einrichtung zur Regelung der Funktion des Verbrennungsmotors eines Kraftfahrzeugs Withdrawn EP1544445A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0351124A FR2864164A1 (fr) 2003-12-19 2003-12-19 Procede et systeme de controle du fonctionnement d'un moteur a combustion interne de vehicule automobile
FR0351124 2003-12-19

Publications (1)

Publication Number Publication Date
EP1544445A1 true EP1544445A1 (de) 2005-06-22

Family

ID=34508797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04300884A Withdrawn EP1544445A1 (de) 2003-12-19 2004-12-14 Prozess und Einrichtung zur Regelung der Funktion des Verbrennungsmotors eines Kraftfahrzeugs

Country Status (2)

Country Link
EP (1) EP1544445A1 (de)
FR (1) FR2864164A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2897109A1 (fr) * 2006-02-07 2007-08-10 Bosch Gmbh Robert Procede de regulation d'une grandeur reelle d'un moteur a combustion interne
WO2008082465A1 (en) * 2006-12-28 2008-07-10 Caterpillar Inc. Engine control system based on soot loading

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4715179A (en) * 1984-09-14 1987-12-29 Volkswagen Ag Method and device for the removal of solid components contained in the exhaust gases of internal combustion engines
EP0661427A2 (de) * 1993-12-23 1995-07-05 Ford Motor Company Limited Brennkraftmaschine
DE19753996A1 (de) * 1997-12-05 1999-06-10 Siemens Ag Verfahren zum Dämpfen von Ruckelschwingungen oder Lastschlägen bei einer Brennkraftmaschine
EP1318287A2 (de) * 2001-12-05 2003-06-11 Renault s.a.s. Verfahren zur Steuerung der Leistung eines Dieselmotors und Motor ausgerüstet mit einem entsprechendem Steuergerät
US6651638B1 (en) * 2002-06-28 2003-11-25 Cummins Engine Company, Inc. System and method for derating an engine to encourage servicing of a vehicle
EP1375880A1 (de) * 2002-06-18 2004-01-02 Renault s.a.s. Steuerungssystem und Verfahren für eine Brennkraftmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4715179A (en) * 1984-09-14 1987-12-29 Volkswagen Ag Method and device for the removal of solid components contained in the exhaust gases of internal combustion engines
EP0661427A2 (de) * 1993-12-23 1995-07-05 Ford Motor Company Limited Brennkraftmaschine
DE19753996A1 (de) * 1997-12-05 1999-06-10 Siemens Ag Verfahren zum Dämpfen von Ruckelschwingungen oder Lastschlägen bei einer Brennkraftmaschine
EP1318287A2 (de) * 2001-12-05 2003-06-11 Renault s.a.s. Verfahren zur Steuerung der Leistung eines Dieselmotors und Motor ausgerüstet mit einem entsprechendem Steuergerät
EP1375880A1 (de) * 2002-06-18 2004-01-02 Renault s.a.s. Steuerungssystem und Verfahren für eine Brennkraftmaschine
US6651638B1 (en) * 2002-06-28 2003-11-25 Cummins Engine Company, Inc. System and method for derating an engine to encourage servicing of a vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2897109A1 (fr) * 2006-02-07 2007-08-10 Bosch Gmbh Robert Procede de regulation d'une grandeur reelle d'un moteur a combustion interne
DE102006005504B4 (de) 2006-02-07 2021-09-02 Robert Bosch Gmbh Verfahren zur Regelung einer Ist-Größe einer Brennkraftmaschine
WO2008082465A1 (en) * 2006-12-28 2008-07-10 Caterpillar Inc. Engine control system based on soot loading

Also Published As

Publication number Publication date
FR2864164A1 (fr) 2005-06-24

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